QueenElizabeth994 QueenElizabeth994
  • 03-09-2017
  • Chemistry
contestada

How many neutrons do (k) potassium-39 and potassium-40 have, respectively?

Respuesta :

quenbarr quenbarr
  • 13-09-2017
Potassium’s atomic number in periodic table is 19, Potassium can only have a mass numbers of 41, 40 and 39. Potassium 39, 40, and 41 are all different isotopes of the element potassium. Each of the isotopes has 19 electrons and 19 protons but the number of neutrons vary. So, in your question Potassium-39 has twenty (20) neutrons, and potassium-40 has 21 neutrons.
Answer Link

Otras preguntas

What equals 12,584 in multiplication?
help me number 21... Thank you
harding and coolidge both based their foreign policy on a return to
Aristotle supported the idea of the atom. True or False
the great depression started in _____.
What is the portuguese word for your welcome?
Hi guys, I apologize for repeating the question. TALL,UPRIGHT AND STRAIGHT,Who could that be? Thanks.
According to the humanist perspective what motivates individuals
description of precipitation
0.105 is 0.05 times a number. Let x represent the unknown number. Which pair of equations are both true? ​ 0.105x=0.050.105x=0.05 and ​ x=0.00525x=0.00525